How to check and adjust the bypass air valve (BPA-ISC) for idle speed control on Ford Crown Victoria?

The BPA-ISC valve controls idle speed by regulating idle control valve. Check the voltage signal from the PCM at 10.5 volts with ignition On. Clean the valve and housing if needed. Adjust idle speed for 5.0L engines by adjusting throttle plate screw. For 1988 models, raise engine speed to 1800 rpm before adjusting. For 1989-1992 models, adjust throttle plate stop screw with 0.010-inch feeler gauge. 4.6L engines require professional service. To remove the BPA-ISC valve, unplug connector, remove screws, inspect O-ring, clean surfaces, install new O-ring, tighten screws, and reconnect connector.

Genuine Ford Crown Victoria Idle Control Valve

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7 Idle Control Valves found

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Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: 2W7Z-9F715-BA
- Other Name: Idler Speed Control
$151.80 MSRP: $154.55
You Save: $2.75 (2%)

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Fits the following Vehicles:
2003-2005 Ford Crown Victoria | 8 Cyl 4.6L | 4AT, 4AT 4R70W, 4AT 4R75W
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Ford Crown Victoria Valve Assy - Throttle Air By-Pass
Part Number: F5PZ-9F715-AA
- Other Name: Idler Speed Control
- Replaces: F2AZ-9F715-A
$85.03 MSRP: $140.55
You Save: $55.52 (40%)

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Fits the following Vehicles:
1992-1995 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD, 4AT AOD-E
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Ford Crown Victoria Valve Assembly - Throttle
Part Number: F2AZ-9F715-A
- Other Name: VALVE ASY - THROTTLE
- Replaced by: F5PZ-9F715-AA
$85.03 MSRP: $140.55
You Save: $55.52 (40%)

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More Info
Fits the following Vehicles:
1992-1995 Ford Crown Victoria | 8 Cyl 4.6L | 4AT AOD, 4AT AOD-E
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Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F8VZ-9F715-AA
- Other Name: Valve Assy - Throttle Air By-Pass
- Replaced by: F8VZ-9F715-AB
More Info
Fits the following Vehicles:
1998-1999 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
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View related parts
Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F8VZ-9F715-BA
- Other Name: Valve Assy - Throttle Air By-Pass
- Replaced by: F8VZ-9F715-BB
More Info
Fits the following Vehicles:
2000-2002 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
Less Info
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Ford Crown Victoria Valve Assy - Throttle Air By-Pass
Part Number: F6AZ-9F715-EB
- Other Name: Idler Speed Control
- Replaces: F6AZ-9F715-EA
More Info
Fits the following Vehicles:
1996-1997 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
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Ford Crown Victoria Valve Assembly - Throttle Air By-Pass
Part Number: F65Z-9F715-BB
- Other Name: Valve Assy - Throttle Air By-Pass
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Fits the following Vehicles:
1996-1997 Ford Crown Victoria | 8 Cyl 4.6L | 4AT 4R70W
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Ford Crown Victoria Idle Control Valve Parts Questions & Answers

Valve Assembly - Throttle Air By-Pass
F8VZ-9F715-BA
Q: How to check and adjust the bypass air valve (BPA-ISC) for idle speed control on Ford Crown Victoria?
A: The BPA-ISC valve controls idle speed by regulating idle control valve. Check the voltage signal from the PCM at 10.5 volts with ignition On. Clean the valve and housing if needed. Adjust idle speed for 5.0L engines by adjusting throttle plate screw. For 1988 models, raise engine speed to 1800 rpm before adjusting. For 1989-1992 models, adjust throttle plate stop screw with 0.010-inch feeler gauge. 4.6L engines require professional service. To remove the BPA-ISC valve, unplug connector, remove screws, inspect O-ring, clean surfaces, install new O-ring, tighten screws, and reconnect connector.